KR20090016916A - Dryer - Google Patents

Abstract

A drier is provided to remarkably save electrical energy heating up air by heating as much as a desired temperature with a heater. A drier comprises a cabinet(110), a drum(120), accommodating an object to be dried, selectively pivotally installed inside the cabinet, an evaporator(132) in which refrigerant circulates, a compressor(134), a condenser(136), an expander and a heat pump(130) supplying to drying and high temperature air to the drum. The heat pump has the atmosphere, ejected from the drum, flows into the evaporator with the external air and a part of the atmosphere, ejected from the drum, flows in into the evaporator according to the temperature of the external air.

Description

Dryer {Dryer}

The present invention relates to a dryer, and more particularly, to a dryer capable of drying the object by drying the air at a high temperature with little electrical energy.

In general, a dryer is a device for drying laundry that has been washed using hot air. 1 is a perspective view showing the internal structure of a conventional dryer. 1, a conventional dryer includes a drum 10 accommodating a dry object, a driving source (not shown) for driving the drum 10, a heating means 20 for supplying hot air into the drum 10, and A blowing fan (not shown) for blowing air heated by the heating means 20 into the drum 10 is provided.

Here, the heating means 20 is an electric heater for heating the air using the resistance heat of the electric heater, and a gas heater for heating the air by the gas burner, etc. In recent years, the electric heater is easy to install and maintain. Is adopted a lot.

The electric type heats air by using resistance heat of an electric heater to supply hot air to the drum 10. Therefore, in the electric system, it was essential to supply power to the heating means in order to generate resistance heat in the electric heater. However, in the electric system as described above, since the air is heated only by the electric heater, electric energy consumption in the heater is significantly increased in order to heat the air to a desired temperature.

Furthermore, in the conventional dryer, since the temperature of the electric heater is significantly increased, a fire may occur inside the dryer due to the temperature of the heater.

The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a dryer capable of supplying air at a desired temperature by using less electric energy.

In addition, the present invention provides a dryer that can prevent the occurrence of fire inside the dryer by reducing the load on the heater of the dryer.

In addition, the present invention provides a dryer that can improve the drying performance of the dryer by improving the efficiency of the refrigerant cycle of the heat pump of the dryer.

Dryer according to the present invention is a cabinet; A drum which is selectively rotatably installed in the cabinet and accommodates a dry object; A heat pump having an evaporator, a compressor, a condenser, and an expander through which a refrigerant circulates, and supplying high temperature dry air into the drum, wherein the air discharged from the drum is introduced into the evaporator together with external air. It is characterized by.

Dryer according to the invention in another aspect is a cabinet; A drum which is selectively rotatably installed in the cabinet and accommodates a dry object; A heat pump including an evaporator, a compressor, a condenser, and an expander through which a refrigerant circulates, and supplying hot dry air into the drum; It includes; a control unit for controlling the amount of air flowing into the evaporator according to the temperature of the outside air.

Dryer according to the invention in another aspect is a cabinet; A drum which is selectively rotatably installed in the cabinet and accommodates a dry object; A heat pump including an evaporator, a compressor, a condenser, and an expander through which a refrigerant circulates, and supplying hot dry air into the drum; A second inlet for allowing air inside the dryer to flow into the condenser; And a third inlet through which the air passing through the evaporator flows into the dryer.

The dryer according to the present invention can dry a dry object while significantly reducing electric energy by removing moisture in the air by a heat pump and supplying it to a drum.

In addition, according to the present invention, by preheating the air with a heat pump and heating the air to a desired temperature by the heater, the electric energy required to heat the air can be remarkably saved, and the heater can be downsized.

In addition, according to the present invention it is possible to prevent the occurrence of fire in the dryer by reducing the load (load) applied to the heater.

Further, according to the present invention, the efficiency of the refrigerant cycle of the heat pump can be improved, and the drying performance of the dryer can be improved.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

2 is a perspective view showing a dryer according to a preferred embodiment of the present invention.

Referring to FIG. 2, the dryer 100 according to the present embodiment includes a cabinet 110 that forms an exterior, a drum 120 that is selectively rotatable inside the cabinet 110, and an inside of the drum 120. It is provided with a heating means for supplying high temperature dry air. Here, the dryer according to the present invention is provided with a heat pump 130 as a heating means. In the present invention, the heat pump 130 is provided with an evaporator 132, a compressor 134 and a condenser 136 through which the refrigerant circulates, thereby drying the air introduced from the outside and appropriately heating.

Hereinafter, the heat pump 130 according to the present invention will be described in detail.

3 is a perspective view showing the configuration of a heat pump 130 according to a preferred embodiment of the present invention.

Referring to FIG. 3, the heat pump 130 according to the present embodiment condenses moisture in inflowing external air, and evaporates 132 to deliver latent heat generated by condensation to a condenser 136 which will be described later. It includes a condenser 136 for heating the air by the latent heat transmitted from the evaporator 132. That is, the heat pump 130 according to the present embodiment heats the air introduced into the condenser 136, thereby supplying hot air into the drum 120.

On the other hand, the dryer 100 according to the present invention may be installed on each side of the cabinet 110, the components of the heat pump 130, preferably as shown in Figure 2 one side of the cabinet 110 A module type heat pump may be provided. By providing the modular heat pump 130, the dry cleaner according to the present invention is more easily disassembled during assembly and maintenance.

To this end, the heat pump 130 according to the present embodiment may further include a case 140 which forms an appearance and is provided with the various components described above. The case 140 may include an upper case 142 and a lower case 144, and the above-described various components may be installed in the lower case 144. At this time. The upper case 142 is preferably detachably coupled to the lower case 144. Then, the installation and maintenance of the various components inside the case 140 is easier.

In this case, the air introduced into the case 140 through the evaporator 132 is dried by condensation of moisture in the evaporator 132. That is, the refrigerant evaporates inside the evaporator 132, whereby the moisture in the air passing through the outside of the evaporator 132 is cooled and condensed to condensed water, and the air is removed to become dry air.

Preferably, a condensate storage unit (not shown) for collecting the condensed water condensed in the evaporator 132 may be further provided. A lower portion of the evaporator 132 is provided with a collecting container for storing condensate, which may be connected to the condensate storage unit located adjacent to the evaporator 132 through a pipe or the like. As a result, the condensed water condensed in the evaporator 132 is first collected in the sump, and then collected in the condensate storage unit through the pipe. The condensate storage unit discards the collected condensate water to the outside of the cabinet 120 through the drain pipe, or the condensate storage unit is detachably installed in the cabinet 110, so that the user may separate the condensate storage unit and discard the condensate.

On the other hand, the evaporator 132 condenses moisture in the air to dry the air and at the same time the latent heat is stored in the evaporator 132. That is, as moisture in the air is condensed, the refrigerant inside the evaporator 132 is vaporized to include latent heat. The latent heat contained in the refrigerant is transferred to the condenser 136 described later and used to heat the air.

That is, the condenser 136 according to the present embodiment is connected to the evaporator 132 and the compressor 134 by a refrigerant pipe (not shown). Therefore, the refrigerant including latent heat in the evaporator 132 is supplied to the condenser 136 through the refrigerant pipe 133 through the compressor 134, and the refrigerant is condensed in the condenser 136 to release latent heat to condenser 136. The air flowing through the heating is heated.

Accordingly, the evaporator 132 condenses moisture contained in the air to dry the air, and at the same time, transfers latent heat generated by the condensation of moisture to the condenser 136 through the refrigerant, and the condenser 136 condenses the refrigerant. Air is heated by releasing latent heat.

Meanwhile, in this embodiment, one air flow path A through which air flows along the evaporator 132 and the condenser 136 is formed. That is, the air flowing into the heat pump 130 is condensed and dried in the evaporator 132, and then heated in the condenser 136 via the compressor 134 is supplied to the drum 120. As such, when one air flow path A is formed, since the air supplied to the drum 120 is in a high temperature dry state, the drying effect may be further improved. In general, in order to improve the drying effect, not only hot air but also dry air must be supplied.

Although the shape of the air flow path A through which the air flows is not limited, the bottom pump 130 is preferably formed in a straight line in consideration of being installed in the cabinet 110. To this end, the evaporator 132, the compressor 134 and the condenser 136 of the heat pump 130 is preferably arranged in a straight line along the air flow path (A). As a result, the volume of the heat pump 130 can be minimized, thereby facilitating assembly and disassembly. Preferably, the case 132 may be further provided with a fan (not shown) to allow the air to flow smoothly through the air flow path (A).

As described above, in the present embodiment has been described with respect to the air flow path when the case 140 is provided in the heat pump 130, the case 140 is not provided and the heat pump (1) on one side of the cabinet 110 When the components of 130 are respectively installed, a separate duct for allowing external air to flow into the evaporator 132 and the condenser 136 may be provided.

On the other hand, when the air is dried and heated by the heat pump 130 and supplied to the drum 120, the air is heated by the condenser 136, so that the temperature of the air is lower than that of a conventional dryer using a heater. Can be. Therefore, in the present exemplary embodiment, a heater (not shown) for heating air at the distal end of the case 140 may be further provided.

Such a heater may consist of a gas burner or an electric heater and is not limited. When the heater is provided at the end of the flow path in which air flows as described above, the air dried and heated by the condenser 136 of the heat pump 130 is heated by the heater again to supply the drum 120 to a desired temperature. It becomes possible. Thus, since the air is preheated by the condenser 136 and heated by the heater, the load on the heater can be significantly reduced. That is, it becomes possible to heat air to a desired temperature by using less electric energy in a heater compared with the former, and also it becomes possible to heat by a small heater.

In addition, in the present embodiment, a configuration in which one air passage A is formed along the evaporator 132 and the condenser 136 of the heat pump 130 has been described. It is also possible to form a configuration. That is, the latent heat is stored by condensing moisture in the air introduced into the evaporator 132, and the air is discharged to the outside of the heat pump 130 again, and the latent heat is transferred to the condenser 136 through a refrigerant to separate air flow path. The air introduced into the condenser 136 is heated to supply the drum 120.

As such, when the flow path through which the air flows is configured separately along the evaporator 132 and the condenser 136, the efficiency of heating the air can be further increased as compared with the case of forming a single flow path. That is, in the single channel, the evaporator 132 not only condenses water in the air but also cools the air by dropping the temperature by a predetermined temperature. Therefore, in the case of preheating the air again in the condenser 136, it must be raised above the temperature.

On the contrary, if the air flow paths formed along the evaporator 132 and the condenser 136 are separately configured, the air dried and cooled in the evaporator 132 is not supplied to the condenser 136, but instead is supplied to the condenser 136. Since separate air is supplied, it becomes possible to heat the air more efficiently.

Hereinafter, with reference to the drawings looks at the configuration of the heat pump module for separately forming an air flow path as described above.

4 is a perspective view showing the configuration of a heat pump according to a second preferred embodiment of the present invention.

Referring to FIG. 4, the basic configuration of the heat pump 230 according to the present embodiment is similar to the embodiment of FIG. 3 described above. That is, the heat pump 230 according to the present embodiment includes an evaporator 232 for condensing moisture in the air and transferring latent heat, and a condenser 236 for heating the air using the latent heat transferred from the evaporator 232. do. In addition, a compressor 234 for compressing a refrigerant is disposed between the evaporator 232 and the condenser 236.

The difference between the heat pump 230 according to the present embodiment and the heat pump 130 of FIG. 3 is that the air flow path is formed separately along the evaporator and the condenser. That is, in the present embodiment, the first air passage B and the second air passage C, through which air flows along the evaporator 232 and the condenser 236, are formed, respectively.

An evaporator 232 is disposed in the first air passage B to condense and dry moisture in the inflowed air and store latent heat in the refrigerant. On the other hand, when the flow path is separated along the evaporator and the condenser as described above, it may be difficult to flow the air by the blowing fan included in the conventional dryer. Therefore, in the present embodiment, it is preferable to further include a fan for flowing air.

Referring to FIG. 4, the first air passage B is provided with a first fan 233 for flowing air together with the evaporator 232. The first fan 233 allows the air to flow into the first air flow path (B) through the evaporator 232. On the other hand, the evaporator 232 is preferably installed in a direction perpendicular to the first air passage (B) in order to maximize the heat exchange area with the air when the air is introduced. As such, the air introduced into the first air passage B is condensed by heat exchange in the evaporator 232, and then discharged to the lower portion of the heat pump 230 through the first fan 233. That is, in the first air passage B, the evaporator 232 corresponds to an air inlet, and a discharge port (not shown) is formed at a lower side of the first fan 233. Of course, the position of the discharge port may be formed in other than the lower side of the first fan 233, the spirit of the present invention is not limited to the position. For example, the outlet may be formed on the side of the first fan 233.

Meanwhile, in the present embodiment, the evaporator 232 serves to supply latent heat generated by condensing moisture in the air to the condenser 236. That is, in this embodiment, the air dried in the evaporator 232 is discharged to the outside of the heat pump 230 without being supplied to the condenser 236, the evaporator 232 to dry the air to supply to the drum 120 Rather than playing a role, it condenses moisture in the air to transfer latent heat to the condenser 236.

In addition, the constitution that delivers the latent heat generated by condensing moisture in the air in the evaporator 232 to the condenser 236 is similar to the embodiment of FIG. 3 described above, and the second air through which air flows along the condenser 236. There is a difference in that the flow path C is formed.

As shown in FIG. 4, the second air flow path C has a first inlet 246 formed at one side of the heat pump 230, and heated air is discharged through the compressor 234 and the condenser 236. It is fed to the drum 120 through the sphere 248. That is, the air introduced through the first inlet 246 flows along the second air flow path C, and is heated by the condenser 236 and supplied to the drum 120.

In addition, although the first inlet 246 is formed outside the heat pump 230 in FIG. 4, the outside air flows into the condenser 236, but is not limited thereto. For example, a second inlet 247 (see FIG. 7) opposite to the first inlet 246, that is, the air inside the dryer, may be introduced into the condenser 236. In this case, air inside the dryer, that is, the inside of the oven may also flow into the condenser 236. Of course, only the first inlet 246 is formed to allow only external air to flow into the condenser 236, and the second inlet 247 formed inside the dryer to allow only air in the refrigerator to flow into the condenser 236. ) May only be formed.

Meanwhile, although the compressor 234 may be disposed between the first fan 233 and the condenser 236, the compressor 234 may be disposed between the evaporator 232 and the first fan 233. That is, the air introduced into the first air flow path B is cooled while condensing moisture in the evaporator 232 and discharged to the lower portion of the case 240 through the first fan 233 via the compressor 234. Then, the reliability of the compressor 334 can be improved.

In general, the compressor 234 is a temperature band that can be stably operated, and when operating in the temperature band is driven normally to increase the reliability. On the other hand, when driving at a temperature above the temperature band, the compressor is overloaded and there is a risk that the compressor does not operate normally or, in severe cases, may be damaged.

Therefore, as in the present embodiment, when the compressor 234 is disposed between the evaporator 232 and the first fan 233 along the first air passage B, water is removed through the evaporator 232. The cooled air may pass through the compressor 234 to cool the compressor 234 and be discharged through the first fan 233. That is, as the compressor 234 is cooled by the air cooled through the evaporator 232, the driving temperature of the compressor 234 is prevented from being increased significantly, so that the compressor 234 can normally operate. do.

Meanwhile, in the present embodiment, a heater 238 may be provided at an end portion of the second air flow path C formed along the condenser 236, and the air is heated by the condenser 236 and the heater 238. 4 is similar to the embodiment of FIG. 4 described above, and thus a detailed description thereof will be omitted.

Hereinafter, a dryer according to a preferred embodiment of the present invention will be described in detail with respect to the air flow.

Figure 5 is a schematic diagram showing the air flow in the dryer of the preferred embodiment according to the present invention.

Referring to FIG. 5, the air introduced into the first air passage B is condensed while passing through the evaporator 232, dried, and then discharged to the outside, and the air introduced into the second air passage C is a condenser. After passing through the heater 236 and the heater 238 and supplied to the drum 120, the clothes and the like contained in the drum 120 are dried and discharged to the outside. At this time, the dryer fan 122 may be provided to smoothly flow the air flow on the second air flow path (C), and the first fan 233 is smoothly flowed on the first air flow path (B). It may be provided.

On the other hand, the configuration of the heat pump 230 is described as a configuration according to FIG. 4 for convenience, but it turns out that the configuration of the heat pump 230 according to FIG. 3 is also applicable. That is, in the case of the heat pump 130 according to FIG. 3, the air introduced into the air flow path A is condensed and dried while passing through the evaporator 132, and then heated while passing through the condenser 136 and the drum 120. It is supplied internally. In this case, however, the first fan 233 may be omitted as in the heat pump 230 of FIG. 4. That is, the flow of air on the air flow path A may flow smoothly enough by the dryer fan 122.

Meanwhile, the heat pump 230 forms a cycle while the refrigerant circulates along the evaporator 232, the compressor 234, the condenser 236, and the expander (not shown). In detail, the refrigerant in the evaporator 232 is evaporated to condense external air, and the refrigerant evaporated in the evaporator 232 flows into the compressor 234 and is compressed. In addition, the refrigerant compressed by the compressor 234 flows into the condenser 236 to condense the outside air, and the refrigerant condensed in the condenser 236 flows into the expander (not shown) and expands, and then evaporator 232 again. Flows into).

In the heat pump 230 constituting the refrigerant cycle as described above, the refrigerant discharged from the evaporator 232 needs to be sufficiently superheated for efficiency and stability of the refrigerant cycle. If the refrigerant discharged from the evaporator 132 is not overheated enough, there may be a slight liquid state in the refrigerant passing through the evaporator 132, and when the refrigerant in such a liquid state flows into the compressor 134, Not only that 134 may be damaged, but also that the evaporation pressure and the condensation pressure of the cycle may be lowered, thereby lowering the efficiency of the refrigerant cycle, thereby reducing the drying performance.

In addition, in order for the refrigerant discharged from the evaporator 232 to overheat sufficiently, the temperature of the air flowing into the evaporator 232 needs to be maintained at a predetermined temperature or more. Because the refrigerant in the evaporator 232 is overheated while being transferred with the air passing through the evaporator 232, the air passing through the evaporator 232 is condensed, if the temperature of the air introduced into the evaporator 232 is low, the evaporator ( This is because the heat transfer rates of the refrigerant and the air in the 232 are lowered, and thus the refrigerant discharged from the evaporator 232 is not overheated sufficiently.

For example, when the external temperature is lower than 5 ° C. as in winter, the heat transfer rate of the air flowing into the evaporator 232 and the refrigerant in the evaporator 232 is reduced, and the refrigerant discharged from the evaporator 232 is overheated. There is a risk that the compressor 234 may be damaged by flowing into the compressor 234 in a gaseous state.

Therefore, in order to prevent damage to the compressor 234 and to improve the efficiency of the refrigerant cycle of the heat pump 230, it is necessary to maintain the external temperature flowing into the evaporator 232 above a predetermined temperature.

To this end, as shown in FIG. 5, the dryer 100 according to the present invention may be provided such that the air D passing through the drum 120 is introduced into the evaporator 232 together with the external air. The air D discharged from the drum 120 is air discharged after drying clothes and the like in the drum 120, and since the temperature is generally high, the air D is transferred to the evaporator 232 together with the external air. When introduced, the temperature of the air flowing into the evaporator 232 may be maintained above a predetermined temperature.

Preferably, a portion (d) of the air (D) discharged from the drum 120 in accordance with the external temperature may be provided to enter the evaporator (232). For example, since the outside temperature is high in summer, the air D does not need to be introduced into the evaporator 232. On the contrary, the outside temperature is low in winter, so the air D is introduced into the evaporator 232. It will need to be. That is, it is preferable to adjust the amount of air d introduced into the evaporator 232 among the air D discharged from the drum 120 according to the external temperature. In particular, as in winter, when the external temperature is less than a predetermined temperature, a portion (d) of the air (D) discharged from the drum 120 may be provided to enter the evaporator (232).

Meanwhile, in order to allow the air D discharged from the drum 120 to flow into the evaporator 232, a predetermined duct (not shown) may be installed. And, in order to adjust the amount of air (d) flowing into the evaporator 232 according to the external temperature, a predetermined damper (not shown) for adjusting the amount of air flowing into the duct is provided, and according to the external temperature If a control unit (not shown) for adjusting the damper is provided. Detailed description of the duct, damper and control unit will be apparent to those skilled in the art, and thus a detailed description thereof will be omitted.

On the other hand, in another embodiment, apart from the configuration for maintaining the temperature of the air flowing into the evaporator 232 above a predetermined temperature, by adjusting the amount of air flowing into the evaporator 232 according to the temperature of the outside air, The same effect may be provided. To this end, the first fan 233 in the heat pump 230 may be provided as a variable fan, and a control unit (not shown) for adjusting the rotational speed of the first fan 233 according to the external temperature.

Specifically, when the external temperature is low, the controller increases the rotational speed of the first fan 233 to increase the amount of air introduced into the evaporator 232. Then, the refrigerant in the evaporator 232 can be heat-transfer with that much air, it can be overheated.

On the contrary, the controller reduces the amount of air flowing into the evaporator 232 by reducing the rotational speed of the first fan 233 when the external temperature is high. Then, the refrigerant in the evaporator 232 can be prevented from being overheated, so that the specific volume of the refrigerant flowing into the compressor 234 can be maintained in an appropriate state.

On the other hand, the refrigerant in the condenser 236 is condensed by heat transfer with the air passing through the condenser 236, the air passing through the condenser 236 is heated, the condenser (for the stability and efficiency of the refrigerant cycle of the heat pump 230) The refrigerant in 236 needs to be radiated smoothly.

Because, if the refrigerant in the condenser 236 is not radiated smoothly, the refrigerant discharged from the condenser 236 may be introduced into the expander (not shown) without sufficient subcooling, so that in the expander Some of the refrigerant may be in a gaseous state as it evaporates, because such a gaseous refrigerant may interfere with the normal operation of the expander and cause problems with the stability of the refrigerant cycle, and may also reduce the efficiency of the refrigerant cycle. .

In particular, when a separate heater 238 is provided at the distal end of the condenser 236, as the heat generated from the heater 238 accumulates, the temperature of the air inside the dryer, that is, the air in the refrigerator is increased. Is introduced into the condenser 236, the refrigerant in the condenser 236 may not be radiated smoothly.

Therefore, in order to improve the efficiency of the refrigerant cycle of the heat pump 230, it is necessary to properly maintain the inside of the dryer, that is, the internal temperature of the refrigerator so that the refrigerant in the condenser 236 can be radiated smoothly.

Hereinafter, with reference to Figures 6 to 8, the configuration in such a way that the temperature in the chamber flowing into the condenser 236 of the heat pump 230 in the dryer according to the present invention can be properly maintained in detail.

FIG. 6 is a view of the dryer according to the present embodiment from the bottom up, in which only the heat pump and the base are briefly shown, and FIG. 7 is a view of the heat pump and the base of FIG.

6 and 7, the dryer according to the present exemplary embodiment includes a base 111 coupled to a lower portion of the cabinet 110 to which components such as a heat pump 230 are mounted. Here, the heat pump 230 illustrated in FIGS. 6 and 7 is the same as the heat pump 230 illustrated in FIG. 4. That is, the heat pump 230 having the first air passage B and the second air passage C is applied.

The dryer according to the present embodiment may be provided such that the air discharged along the first air flow path (B) flows into the inside of the dryer, that is, the refrigerator, so that the refrigerant in the condenser 236 may be radiated smoothly. Since the air discharged along the first air passage B is air dried at a low temperature through the evaporator 232, the refrigerant in the condenser 236 may be radiated smoothly if it is introduced into the condenser 236. have.

To this end, at a predetermined position of the base 111, the air flowing into the evaporator 232 is condensed after passing through the evaporator 232 and discharged to the lower portion of the base 111, the first air flow path (B) The air discharged along) may again be provided with a third inlet 113 through which the air is introduced into the dryer, that is, into the refrigerator, and a second inlet 247 through which the air inside the refrigerator is introduced into the condenser 236. Preferably, it may further include a duct 115 connecting the outlet 112 and the third inlet 113 to guide the air discharged along the first air flow path (B) to be introduced into the chamber again. . That is, the second inlet 247 serves to allow the low-temperature dry air passing through the evaporator 232 to the inside of the duct 115, and the air passing through the evaporator 232 is the second inlet 247. It serves as a guide to smoothly flow into.

On the other hand, in the present embodiment is disclosed that the outlet 112 and the third inlet 113 is provided in the base 111, the spirit of the present invention is not limited to the position. For example, the outlet 112 may be formed at the side of the first fan 233, and the third inlet 113 may be formed at the side of the dryer, that is, at the side of the cabinet 110. However, when the outlet 112 and the third inlet 113 is formed on the side as described above, the duct 115 connecting the outlet 112 and the third inlet 113 may be exposed to the outside, preferably in appearance You can't. Therefore, it is preferable that the outlet port 112 and the third inlet port 113 are provided in the base 111 so that the duct 115 is not exposed to the outside.

In addition, the second inlet 247 is provided in the case 240 of the heat pump 230, and is preferably provided at one side of the condenser 236. The second inlet 247 may be provided together with the first inlet 246, but only the second inlet 247 may be provided without the first inlet 246. In this case, the air flowing into the condenser 236 will only be introduced into the air in the refrigerator.

As described above, when the air discharged along the first air flow path B through the evaporator 232 is introduced into the interior of the refrigerator, the interior temperature of the refrigerator may be prevented from becoming too high, and thus the interior of the interior of the refrigerator is introduced into the condenser 236. The air can be maintained at an appropriate level so as not to be too high, so that heat dissipation of the refrigerant in the condenser 236 can be effected effectively.

Preferably, the amount of air introduced into the air from the air passing through the evaporator 232 may be provided to be adjusted according to the temperature of the air in the air. Then, the temperature of the air in the air can be maintained in a predetermined range, which is more effective. Because, if the air passed through the evaporator 232 is introduced into the inside of the refrigerator so that the temperature of the air in the refrigerator is too low, heating may not be effectively performed while the air in the refrigerator is heated through the condenser 236, and thus drying performance may be weakened. This is because there is concern. Therefore, it is necessary to make sure that the temperature of the air in the air is properly maintained.

To this end, the dryer 100 according to the present embodiment is provided in the base 111, the adjusting device 140 for adjusting the amount of air flowing into the third inlet 113, and senses the temperature of the air in the air It may further include a sensor (not shown), and a controller (not shown) for controlling the adjusting device 140 according to the detection of the sensor (not shown). Here, the sensing unit (not shown) may be a predetermined temperature sensor for sensing the temperature of the air in the air.

Hereinafter, the configuration will be described in detail with reference to FIG. 8.

As shown in FIG. 8, the adjusting device 140 is connected to a predetermined motor 141 and the motor 141 to be configured to block the third inlet 113 according to the driving of the motor 141. It may consist of one or more wings.

Preferably, the wing portion is composed of a plurality of wings (142, 143, 144) of different lengths so that the degree of blocking the third inlet 113, the motor 141 is a third of each of the plurality of wings It may be made of a step motor to block the inlet 113.

For example, as shown in FIG. 8, the wing portion has a length that closes half of the first wing 142 and the third inlet 113, which are formed to have a long length so as to completely block the third inlet 113. The branch may include a second wing 143 and a third wing 144 having a length that blocks only a part of the third inlet 113. Then, the control unit drives the step motor 141 according to the temperature of the air in the refrigerator to control any one of the wings to block the third inlet 113, into the air in the air passed through the evaporator 232. The amount of air introduced can be adjusted in various ways, and thus the temperature of the air in the air can be maintained in a certain range.

That is, when the temperature of the air in the air is appropriate, as shown in FIG. 8 (a), the controller controls the motor 141 so that the first wing 142 having the longest length blocks the third inlet 113. By controlling, low-temperature dry air passing through the evaporator 232 is prevented from entering into the air. In this case, a predetermined hole (not shown) communicating with the outside at a predetermined position of the duct 115 connected to the third inlet 113 so that air passing through the evaporator 232 and the duct 115 can be discharged to the outside of the refrigerator. C) can be formed.

When the temperature of the air in the air is high, as shown in FIG. 8C, the control unit causes the third wing 144 having the shortest length to block the third inlet 113 or the third By controlling the motor 141 so that the inlet 113 is not blocked, all the low-temperature dry air passing through the evaporator 232 is introduced into the refrigerator. Then, the temperature of the air in the air can be lowered.

In addition, as shown in FIG. 8 (b), the control unit causes the second wing 144 of intermediate length to block the third inlet 113 so that only a part of the air passing through the evaporator 232 flows into the inside of the refrigerator. The motor 141 may be controlled to be able to.

Meanwhile, both the heat pump 130 of FIG. 3 and the hint pump 230 of FIG. 4 may be applied to the dryer of FIG. 5, and the heat pump 230 of FIG. 4 of the dryer of FIGS. 6 to 8. ) Can be applied. That is, not only the heat pump 130 in which one air flow is formed, but also the heat pump 230 in which two air flows are formed may be applied to the dryer according to FIG. 5. 6 to 8 may be applied to a heat pump 230 in which two air flows are formed.

As described above, the idea according to the present invention improves the efficiency of the refrigerant cycle of the heat pump (130,230) when the dryer 100 is provided with heat pumps 130, 230 as a heating means, drying performance of the dryer To improve or to prevent damage to the components of the heat pump (130,230), the scope is not limited only to those described above, it will be apparent to those skilled in the art that the scope obviously included in the spirit according to the present invention. .

1 is a perspective view showing the internal configuration of a dryer according to the prior art,

Figure 2 is a perspective view showing the internal configuration of the dryer according to a preferred embodiment of the present invention,

3 is a perspective view showing an embodiment of a heat pump in FIG.

Figure 4 is a perspective view showing another embodiment of the heat pump in Figure 2,

Figure 5 is a schematic view showing the air flow of the dryer according to a preferred embodiment of the present invention,

6 is a view of the dryer from below, in accordance with a preferred embodiment of the present invention, in which only a heat pump and a base are shown in a simplified view;

FIG. 7 is a top view of the heat pump and base of FIG. 6;

8 is a view schematically showing the operating principle of the adjusting device in FIG.

Claims (19)

Cabinet; A drum which is selectively rotatably installed in the cabinet and accommodates a dry object; And And a heat pump having an evaporator, a compressor, a condenser, and an expander through which the refrigerant circulates, and supplying hot dry air into the drum. Dryer, characterized in that the air discharged from the drum is provided to the evaporator with the outside air. The method of claim 1, Dryer, characterized in that some of the air discharged from the drum is introduced into the evaporator in accordance with the temperature of the outside air. The method of claim 2, And a portion of the air discharged from the drum is introduced into the evaporator when the temperature of the outside air is less than or equal to a predetermined temperature. The method of claim 1, And a duct for allowing air discharged from the drum to enter the evaporator. The method of claim 4, wherein And a damper provided at a predetermined position of the duct to control an amount of air introduced into the evaporator, and a controller to control the damper according to the temperature of the outside air. Cabinet; A drum which is selectively rotatably installed in the cabinet and accommodates a dry object; A heat pump including an evaporator, a compressor, a condenser, and an expander through which a refrigerant circulates, and supplying hot dry air into the drum; And And a controller for controlling the amount of air introduced into the evaporator according to the temperature of external air. The method of claim 6, Further comprising a fan to allow external air to enter the evaporator, The controller is characterized in that for controlling the rotational speed of the fan in accordance with the temperature of the outside air. The method of claim 7, wherein The controller is characterized in that for increasing the rotational speed of the fan when the temperature of the outside air is low. The method of claim 7, wherein And the fan is provided between the evaporator and the condenser. The method of claim 9, The compressor is provided between the evaporator and the fan. Cabinet; A drum which is selectively rotatably installed in the cabinet and accommodates a dry object; A heat pump including an evaporator, a compressor, a condenser, and an expander through which a refrigerant circulates, and supplying hot dry air into the drum; A second inlet for allowing air inside the dryer to flow into the condenser; And And a third inlet port through which the air passing through the evaporator flows into the dryer. The method of claim 11, The third inlet is a dryer, characterized in that provided in a predetermined position of the base coupled to the lower portion of the cabinet. The method of claim 12, And a duct through which the air passing through the evaporator is directed to the third inlet. The method of claim 11, And a controller for controlling an amount of air introduced into the dryer from the air passing through the evaporator, and a controller for controlling the controller according to the temperature of the dryer. The method of claim 14, The control device is a dryer comprising a motor and at least one wing configured to block the third inlet in accordance with the rotation of the motor. The method of claim 15, Dryer, characterized in that the wing portion is composed of a plurality of wings of different lengths. The method of claim 16, And the motor is a step motor. The method of claim 11, The heat pump forms an exterior, and includes a case having the evaporator, the compressor, the condenser, and the expander therein. The second inlet is a dryer, characterized in that provided on one side of the case. The method of claim 11, Dryer further comprises a heater at the rear end of the condenser.

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